3. A gear train has a ratio of 60/12 and the driving gear is turning 150 RPM. What is the speed of the driven gear in RPM? _
How to solve this ?

How much heat is required to convert 0.3 kg of ice at 0°c to water at the same temperature

Air flows upward in the wick of a lantern because of the liquid property called

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?